How to choose DC Power Modules from DC?

DC – DC power module It has been widely used in network, communication, railway, military, industrial control and other fields due to its superior performance, compact size and remarkable feature of simplified use. For this reason, most engineers are well aware that choosing the right DC to DC power modules can solve problems, save designs, and help them focus more in these areas. These not only help to increase the reliability of the overall system, but also shorten the overall cycle of product development. For this reason, it is important to choose the right DC to DC power modules.

In addition to the most basic functions of voltage conversion, the following factors must also be considered. Other ways you can choose:

  • Package: Generally, power modules are packaged in various forms. Some of them are by global standards, some are non-standard. In some cases, the same rated power modules come in different packaging or the same package has a different rated power. So, some criteria for choosing the right power module:
    1. Here you will choose the types that are compatible with the global standards package for as long as possible, you will get better compatibility and it will be easier to find a replacement supplier.
    2. Module upgrades, system scalability, and scalability should be included
    3. The size of the module should be as small as possible to save more space for other sections
  • Rated power: According to the general recommendation, the real power consumption of the power module is 30-80%. Very low loads can result in waste, and very high ones are relatively unstable, and they also give off a lot of heat. Most modules come with such overload protection, generally offering 120-150% bearing. However, it is not recommended to work for a long time in these overload conditions.
  • Operating frequency: In general, the higher the frequency, the smaller the output ripple sounds and the better the dynamic response. But here, especially the value of the magnetic reaction will increase. In general, the switching frequency of the power module available on the market is less than 300 kHz, or even less than 100 kHz. Therefore, it is difficult to meet the requirements of dynamic reaction. So, before you buy one, you should consider applying high-frequency products to strict requirements. In addition, users should be aware that a syntonic oscillation may occur even though the switching frequency of the power module is close to the signal frequency.
  • Reducing the temperature range: Generally, power module manufacturers have several temperature ranges known as military rank, industrial grade, and commodity grade modules. Thus, when choosing modules, you must take into account the real needs of the operating temperature range. Different types of heat levels use different types of roads and materials, and therefore the costs vary greatly. So there are basically two options:
    1. Select according to the temperature range
    2. Choose based on power and package usage